CN212744105U - Cooling structure of valve seat ring - Google Patents
Cooling structure of valve seat ring Download PDFInfo
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- CN212744105U CN212744105U CN202020255969.4U CN202020255969U CN212744105U CN 212744105 U CN212744105 U CN 212744105U CN 202020255969 U CN202020255969 U CN 202020255969U CN 212744105 U CN212744105 U CN 212744105U
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- cooling water
- valve seat
- cooling
- seat ring
- air
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Abstract
The utility model discloses a cooling structure of a valve seat ring, which comprises two air inlets and two air outlets which are arranged on a cylinder cover body in a diamond shape, wherein an air inlet valve seat ring is arranged on the air inlet, an air outlet valve seat ring is arranged on the air outlets, the outer wall of the air outlet valve seat ring is provided with a cooling water tank, a cooling water inlet channel is arranged between the two air outlet valve seat rings, one end of the cooling water inlet channel is provided with a water inlet hole, and the other end of the cooling water inlet channel is communicated with the cooling; one side of the cooling water tank, which is far away from the cooling water inlet channel, is provided with a cooling water outlet channel, one end of the cooling water outlet channel is communicated with the cooling water tank, and the other end of the cooling water outlet channel is provided with a water outlet hole. The utility model discloses a cooling structure of valve seat circle, coolant liquid is regional integrative with seat circle, cylinder cap structure three, and coolant liquid direct contact cylinder cap, seat circle possess better cooling capacity.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to a cooling structure of valve seat circle.
Background
When an exhaust valve of an exhaust valve seat ring of the internal combustion engine is opened at the tail of a power stroke, high-temperature and high-pressure gas directly acts on the exhaust valve seat ring, and meanwhile, the intake valve seat ring is also subjected to high temperature due to the fact that the intake valve seat ring is close to the exhaust valve seat ring. The exhaust valve seat and the intake valve seat are deformed by a high thermal load, and if the cooling effect is not good, cracks are easily generated.
The cooling structure of the existing valve seat ring includes: the cylinder cover body is provided with a first air inlet, a second air inlet, a first exhaust port and a second exhaust port which are arranged in a diamond shape, inlet valve seat rings, exhaust valve seat rings and cooling water channels are respectively and correspondingly arranged at the inlets of the inlet/exhaust ports, and the water channels are arranged between the adjacent exhaust valve seat rings, between the adjacent inlet valve seat rings and between the adjacent inlet/exhaust valve seat rings. The cooling structure of the valve seat ring dissipates heat through a cross cooling water channel processed between the exhaust valve seat ring and the intake valve seat ring.
The existing cooling structure mainly has the following three disadvantages:
1. the coolant liquid region is far away from the seat ring, the capacity of taking away the heat of valve seat ring by the coolant liquid of this cooling mode is not enough, and heat transfer effect is not good, causes the thermal stress of valve seat ring and peripheral structure to be heated and warp great, causes the unusual wearing and tearing to the seat ring from this, is unfavorable for the life of seat ring, has restricted the further promotion of internal-combustion engine performance to a certain extent.
2. High heat can cause local boiling of cooling water, easily cause cavitation erosion of a valve seat ring, and influence service performance, thereby influencing the reliability of an engine.
3. In the whole engine cooling system, the cylinder head in the high-temperature region cannot be cooled well preferentially, and the cooling capacity of the whole engine is poor.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a cooling structure of valve seat circle, the coolant liquid is regional integrative with seat circle, cylinder cap structure three, and coolant liquid direct contact cylinder cap, seat circle possess better cooling capacity.
The utility model discloses take following technical scheme to realize above-mentioned purpose:
a cooling structure of a valve seat ring comprises two air inlets and two air outlets which are arranged on a cylinder cover body in a diamond shape, wherein an air inlet valve seat ring is arranged on each air inlet, an air outlet valve seat ring is arranged on each air outlet, a cooling water tank is arranged on the outer wall of each air outlet valve seat ring, a cooling water inlet channel is arranged between the two air outlet valve seat rings, one end of each cooling water inlet channel is provided with a water inlet hole, and the other end of each cooling water inlet channel is communicated with the cooling water; one side of the cooling water tank, which is far away from the cooling water inlet channel, is provided with a cooling water outlet channel, one end of the cooling water outlet channel is communicated with the cooling water tank, and the other end of the cooling water outlet channel is provided with a water outlet hole.
Preferably, a water plug matched with the water inlet hole is arranged on the cooling water inlet channel.
Preferably, the cooling water inlet channel and the two cooling water outlet channels are arranged in a Y shape.
Preferably, the cooling water channel is annular and arranged around the exhaust valve seat ring.
The utility model has the advantages that:
the utility model discloses a cooling structure setting of valve seat circle can force to lead to water cooling high-temperature area to this reduces the thermal deformation of exhaust valve seat circle and peripheral structure, thereby improves the abnormal wear that thermal deformation brought, improves the life of part. The utility model discloses independent water course cooling structure can improve the regional heat-sinking capability of seat circle greatly. Compared with the traditional structure, the utility model discloses a cooling effect is better, can bear the secondary of current engine and carry power development, and the potentiality is huge, and this cooling structure is simple, and the processing degree of difficulty is not big.
Drawings
FIG. 1 is a cross-sectional view of a cooling structure for a valve seat insert provided by the present invention;
fig. 2 is a partial schematic view of a D-D direction rotation section of fig. 1.
In the figure, 1-cylinder cover body, 2-inlet valve seat ring, 3-exhaust valve seat ring, 4-cooling water tank, 5-cooling water inlet channel, 6-water inlet hole, 7-cooling water outlet channel, 8-water outlet hole and 9-water plug.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings 1-2 and the detailed description thereof.
Referring to fig. 1 and 2, an embodiment of the present invention provides a cooling structure for a valve seat ring, including two air inlets and two air outlets which are arranged on a cylinder head body 1 in a diamond shape, each air inlet being provided with an intake valve seat ring 2, and each air outlet being provided with an exhaust valve seat ring 3. The outer wall of the exhaust valve seat rings 3 is provided with a cooling water tank 4, a cooling water inlet channel 5 is arranged between the two exhaust valve seat rings 3, one end of the cooling water inlet channel 5 is provided with a water inlet hole 6, and the other end of the cooling water inlet channel is communicated with the cooling water tank 4. One side of the cooling water tank 4 far away from the cooling water inlet channel 5 is provided with a cooling water outlet channel 7, one end of the cooling water outlet channel 7 is communicated with the cooling water tank 4, and the other end of the cooling water outlet channel is provided with a water outlet hole 8.
The utility model discloses a cooling structure of valve seat circle is when using, and the cooling water flows through the high temperature region between the valve seat circle from cylinder cap upper portion through inlet opening 6 and cooling water inlet channel 5 with higher velocity of flow, increases cooling trough 4 in the exhaust valve seat circle 3 and the cylinder cap faying face department of highest temperature simultaneously, forces to lead to water cooling high temperature area to this reduces the thermal deformation of exhaust valve seat circle 3 and peripheral structure, thereby improves the abnormal wear that thermal deformation brought, improves the life of part. The utility model discloses independent water course cooling structure can improve the regional heat-sinking capability of seat circle greatly. Compared with the traditional structure, the utility model discloses a cooling effect is better, can bear the secondary of current engine and carry power development, and the potentiality is huge, and this cooling structure is simple, and the processing degree of difficulty is not big.
Furthermore, a water plug 9 matched with the water inlet hole 6 is arranged on the cooling water inlet channel 5 to prevent water leakage.
Furthermore, the cooling water inlet channel 5 and the two cooling water outlet channels 7 are arranged in a Y shape, so that the cooling liquid area is integrated with the seat ring and the cylinder cover structure, and the cooling liquid directly contacts the cylinder cover and the seat ring, so that better cooling capacity is achieved.
Furthermore, the cooling water tank 4 is annular and is arranged around the exhaust valve seat ring 3, so that the heat dissipation effect is better achieved.
Although the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (4)
1. A cooling structure of a valve seat ring comprises two air inlets and two air outlets which are arranged on a cylinder cover body (1) in a diamond shape, wherein an air inlet valve seat ring (2) is arranged on each air inlet, and an exhaust valve seat ring (3) is arranged on each air outlet; one side of the cooling water tank (4) far away from the cooling water inlet channel (5) is provided with a cooling water outlet channel (7), one end of the cooling water outlet channel (7) is communicated with the cooling water tank (4), and the other end of the cooling water outlet channel is provided with a water outlet hole (8).
2. A valve seat insert cooling structure according to claim 1, wherein a water plug (9) fitted to the water inlet hole (6) is provided on the cooling water inlet passage (5).
3. A valve seat insert cooling structure according to claim 1, wherein the cooling water inlet passage (5) and the two cooling water outlet passages (7) are arranged in a "Y" shape.
4. A valve seat insert cooling structure according to claim 1, characterized in that the cooling water groove (4) is formed in a ring shape so as to surround the exhaust valve seat insert (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020255969.4U CN212744105U (en) | 2020-03-05 | 2020-03-05 | Cooling structure of valve seat ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020255969.4U CN212744105U (en) | 2020-03-05 | 2020-03-05 | Cooling structure of valve seat ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212744105U true CN212744105U (en) | 2021-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020255969.4U Active CN212744105U (en) | 2020-03-05 | 2020-03-05 | Cooling structure of valve seat ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212744105U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012807A (en) * | 2020-03-05 | 2020-12-01 | 广西玉柴机器股份有限公司 | Cooling structure of valve seat ring |
-
2020
- 2020-03-05 CN CN202020255969.4U patent/CN212744105U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012807A (en) * | 2020-03-05 | 2020-12-01 | 广西玉柴机器股份有限公司 | Cooling structure of valve seat ring |
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